Improvement in log-lifters



G. B. SIMS. Improvemn'txn Log Lifer.

Patented March 5, 1872;Y

UNITED STATES PATENT g Dritten.'

GREEN B. SIMS, OF ELIZABETH, INDIANA.

IMPROVEMENT IN LQG-LIFTERS.

Specification forming part of Letters Patent No. 124,294, dated March 5,1872.

Speciiication describing certain Improvements in Log-Lifter, invented byGREEN B. SIMS, of Elizabeth, in the county of Harrison and State otIndia-na.

Figure l is a front view of my improved machine, the operatingleverbeing removed. Fig. 2 is a det-ail vertical section ofthe sametaken through the line a: x, Fig. l.

Similar letters of reference indicate correspondin g parts.

My invention has for its objectto furnish an improved machine forlifting logs and other` heavy weights to loa'd them upon wagons, forpulling stumps, and for other similar purposes, and which shall besimple in construction, in expensive in manufacture, convenient in use,and eifective in operation; and it consists in the construction andcombination of various parts of the apparatus, as hereinafter more fullydescribed.

A is the base. or foundation-frame of the machine, whicli should be madeof such length yand breadth as will give a stable support to themachine. In the frame A are formed two parallel slots, in which arepivoted the lower ends of two parallel uprights, B, so that the saiduprights may be moved out and in to adjust them to the position of theend of the log or other weight to be raised, the movement be ing limitedby shoulders formed upon the said lower ends. The upper part of theuprights B are lnade narrower, and they are connected at the shoulderthus formed and held in their proper rela-tive positions by the bolts C.In grooves or ways in theinner sides of the uprights B slide twouprights, D, which are connected and made to move together by plates orcross-bars F. To the lower parts of the uprights D is attached a seriesof cross-bars, pins, or bolts, F, which serve as supports for theoperating end of the lever G, when operating the machine. H is a loop orstirrup, hung from one of the bolts C, to serve as a fulcrum to thelever G. The lever G is notched transversely upon the upperl side oi'its end, to receive the pins F, and upon its lower side at a littledistance from its end, to receive the fulerum-loop H, so as to preventthe said lever from slipping upon the said pins and loop. To theuprights D are attached rack-bars I, upon the teeth of which the pawls Jtake hold, to hold the uprights D securely in any position into whichthey may be raised. rlhe pawls J are made iu one piece, or arerigidlyconnected together and provided with a handle, K, for conveniencein withdrawing the pawls J from the rack-teeth I when required. Thepawls J are held forward against the teeth ofthe racks I by a spring, L,one end otA which rests against the said pawls, and its other end restsagainst a block or plate, M, connected with the uprights B. In the sidesofthe uprights I) and B are formed series ot` holes to receive the pinsN and 0, as shown in Figs. l and 2. P is a bar, one or both ends ofwhich are so formed as to enter between the uprights D and rest upon thepin N. In using the machine forliftinglogs, the bar I is chained orotherwise secured to the log. The uprights D B are then moved forward,so that the end ofthe bar l? mayY enter between the uprights D and restupon the pin N. The lever G is then operated to raise the uprights D asfar as they will go. The pin O is then inserted in the holes in theuprights B, the pin N removed, the uprights I) run down, the pin Ninserted beneath the end of the bar I?, and the uprights D again raised5 and so on until the end of the log has been raised to a suiijcientheight. The rear wheels of a wagon may then be placed beneath the endofthe log, and the log lowered upon and chained to them. rlhe machine isthen moved to the other end of the log, which is then raised in the samemanner and lowered upon and secured to the forward part of the wagon. Inraising horse-powers and other heavy weights to load them upon a wagon,two machines should be used, one at each end of the bar P.

In using the machine for pulling stumps, the base-frame A is made in theform of a sled, and is extended forward as far as the outer end ot'thelever G. In this case a pulley should be attached to the end ofthelever G, around which a rope should be passed, which should also bepassed around a pulley attached to the forward part of the basename orsled A, so that the said lever G may be operated by a horse attached tothe end ot said rope, one or more machines being used, as may bedesired.

Having thus described myinVent-ion,1 claim constructed and operatingsubstantially as as new and desire to secure by Letters Patherein shownand described, and for the pureutd 1 l l pose set forth.

An improve machine forme( y tie comhis binatiou ofthe base-frame A,uprights B, bolts GREEN Bmaxrk SIMS' O, sliding uprights D, cross-barsor plates E, cross-bars or rods F, lever G, loop or stirrup Vitnesses:

II, rack-bars I, pawls J, spring' L, pins N O, EDWARD S. COMPTON, andbar P with each other, said parts being THOMAS B. BIRDWELL.

